Orthopedic back cushion



FIG. 1 is a top front perspective view of an orthopedic back cushion, showing my new design;

FIG. 2 is a bottom rear perspective view thereof;

FIG. 3 is a side elevational view thereof, the opposite side elevational view being identical thereto;

FIG. 4 is an end elevational view thereof; and,

FIG. 5 is a top plan view thereof. 

The ornamental design for an orthopedic back cushion, as shown and described. 